Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Introduction to Organic Chemistry
185 practice questions
Topics covered
- Types of formula for organic molecules19 practice questions
- General formulae18 practice questions
- Displayed formulae19 practice questions
- Naming organic compounds19 practice questions
- Coding for the type of compound19 practice questions
- Coding for branched chains19 practice questions
- Structural isomerism in the alkanes19 practice questions
- A quick introductory look at the alcohols20 practice questions
- Some chemical reactions of organic compounds21 practice questions
Practice questions
31–31 of 31 · Hard
Question 31
8 marks · Hard
Answer and see the solution →Organic chemists use systematic naming to identify complex molecules. The rules for the type of compound and for branched chains must both be followed for names to be correct.
(a)[3 marks]State the name given to the type of compound with the structure shown below. Explain which features of the structure identify this type.
Displayed formula for a compound. (b)A branch is added to the compound in part (a) by replacing one of the hydrogen atoms on the second carbon (counting from the left) with an ethyl group (–CH2CH3).
i) Draw the full displayed formula for the new compound.
ii) Using the rules for branched chains and the type of compound, write the full systematic (IUPAC) name for your structure.
(i)[2 marks]Draw the displayed formula for the molecule described.
(ii)[3 marks]Give the IUPAC name for the compound you have drawn, following the rules for branched chains.